[u'r not alone小组]提纲作业 Argument54

Luise8891UID: 2906459

Argument54::p The following appeared in a newsletter on dental health.

"A recent research study reported the experience of dentists whose patients had, over a period of five years, regularly used Flux Dental Floss as part of their dental hygiene routine. The report indicates that these dentists had 50 percent fewer cases of gum disease than did dentists whose patients did not use Flux regularly. In addition, most of the Flux users who were surveyed by their dentists agreed that Flux's mint flavor would encourage people to floss more often. Thus, even though Flux may cost more than other brands of floss, it is clearly a worthwhile investment for those who want to be assured of healthy teeth and gums."

ydycgwllUID: 2894737

原题逻辑：投资用Flux来保护牙齿牙床值得，因为调查显示用了能保健康且Flux薄荷味好用
1、在用了和没用的两者实验对象，除此差别以外，还有可能很多其它因素导致用了牙线的人更健康；例如：牙医开的药的作用，自己其它护理去医院定期洗牙；
2、即使牙线有那么大的作用，也还要考虑大家的经济情况，长期使用也是一笔不少的开支，才能得出是否值得
3、即使能买，也还存在其它牌子的牙线有薄荷味；况且“most”同意不是“all who want to be assured of healthy teeth and gums”，所以也不能这么结论

tingsnowyUID: 2739192

1. the study lacks representative
a. 500 is a relatively small number to draw a conclusion.
b. The frequency of exercise during a year time is not long enough to prove the causal relationship between vigorous outdoor exercise and longevity
c. The survey is constrained on middle-aged men. What about the women, child etc )
2. false analogy. (a.the patient has many different with common people in corporeity
b. it is possible that stronger people tend to exercise more frequently and vigorously. Their longevity is due to their healthy condition not the exercise. While patients tend to have a weaker condition in heath.)